A method and device for beneficiating and desiliconizing ultra-low-grade bauxite

Abstract

The present invention discloses a method and device for beneficiation and desiliconization of ultra-low-grade bauxite, comprising a box, a feeding hopper connected to the inside of the box is arranged on the top of the box, two guide plates symmetrically distributed and inclined are fixedly installed between the inner walls on both sides of the box, two crushing rollers located below the two guide plates are arranged between the inner walls on both sides of the box, and a first filter screen located below the two crushing rollers is fixedly connected between the inner walls on both sides of the box, and the first filter screen is inclined and has an elastic mesh surface. The present invention can realize automatic knocking of the first filter screen surface, automatic grinding and refinement of small pieces of gravel, automatic conveying and crushing of large pieces of gravel, introduction of quantitative leaching solution, mixing of leaching solution and mineral powder, and inhalation and collection of dust and harmful gases through the driving of a driving motor, effectively improving work efficiency, being more environmentally friendly, integrating multiple functions in one, and being more convenient to use.

Description

Technical Field

[0001] The present invention relates to the field of mineral processing technology, and in particular to a mineral processing and desiliconization method and device for ultra-low-grade bauxite. Background Art

[0002] Ultra-low-grade bauxite refers to bauxite with an A / S ratio lower than 2.0. When the A / S ratio of bauxite is lower than 2.0, the aluminum recovery rate of the concentrate obtained by flotation desiliconization will be reduced to less than 50%, thus affecting the economic efficiency of flotation. Iranian bauxite has such a property that the mixed grade of the ore body is not high, but the ore body is not uniform and has certain layered sedimentary characteristics. This kind of bauxite can increase the grade to more than 2.0, and then flotation is carried out to obtain bauxite concentrate with an A / S ratio higher than 5. Leaching is the process of dissolving aluminum in bauxite. Through leaching, aluminum can be extracted from low-grade bauxite, thereby improving the grade.

[0003] Before leaching bauxite, it is necessary to pre-treat the bauxite to make it fine so that it can fully contact with the leaching solution and improve the effect of aluminum dissolution. However, when the existing device is used, the bauxite refining effect is poor, and the large pieces of crushed stone need to be manually collected and then manually put back into the device for crushing, which is inconvenient to use and has low work efficiency. The filter is prone to blockage during the crushing process, and some dust and toxic gases will be generated during the refinement and leaching process, which requires additional equipment for collection and treatment, and has poor practicality. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a method and device for beneficiation and desiliconization of ultra-low-grade bauxite.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A method and device for beneficiating and desiliconizing ultra-low-grade bauxite, comprising a box, a feeding hopper connected to the inside of the box is arranged on the top of the box, two guide plates symmetrically distributed and inclined are fixedly installed between the inner walls on both sides of the box, two crushing rollers located below the two guide plates are arranged between the inner walls on both sides of the box, a first filter screen located below the two crushing rollers is fixedly connected between the inner walls on both sides of the box, the first filter screen is inclined and the mesh surface has elasticity, a second filter screen located below the first filter screen is arranged between the inner walls on both sides of the box, a feed port and a discharge port are opened on the side wall at one end of the box, the bottom of the feed port is aligned with the top of one of the guide plates, and the bottom of the discharge port is aligned with the top of the first filter screen, an anti-blocking mechanism is arranged on the box, a cleaning mechanism is arranged on the anti-blocking mechanism, a grinding mechanism connected to the anti-blocking mechanism is arranged on the box, a stirring mechanism connected to the anti-blocking mechanism is arranged on the box, and a feeding mechanism connected to the grinding mechanism is arranged on the box.

[0007] Preferably, the anti-blocking mechanism includes a fixing frame fixedly mounted on an outer wall of one side of the box body, a driving motor is fixedly mounted on the outer wall of the fixing frame, a third rotating shaft is penetrated on one side wall of the box body and is rotatably connected to the third rotating shaft and is located between the first filter screen and the second filter screen, an end of the third rotating shaft located outside the box body penetrates the fixing frame and is fixedly connected to an output shaft of the driving motor, a second circular plate is fixedly mounted on an end of the third rotating shaft located inside the box body, a swing rod is rotatably connected on a side wall of the second circular plate away from the third rotating shaft, a fixing box fixedly connected to an inner wall of one side of the box body is provided in the box body, a third rectangular rod slidably connected to the third rectangular rod is penetrated on the top of the fixing box, and the third rectangular rod is located at the fixing box A protrusion is fixedly installed on one end of the outside, and a force storage rod is rotatably connected to a side wall of the third shaped rod close to the third rotating shaft, and a second square plug slidably connected to the inner wall of the fixed box is fixedly installed on one end of the third shaped rod located in the fixed box, and a tension spring is fixedly connected between the second square plug and the inner top of the fixed box, and a second bend pipe and a fifth bend pipe connected to the interior of the fixed box are provided on the fixed box, and the ends of the second bend pipe and the fifth bend pipe connected to the fixed box are both located below the second square plug, and a first shell is provided on an outer wall of one side of the box body, and the end of the fifth bend pipe away from the fixed box is connected to the first shell, and the end of the second bend pipe away from the fixed box is connected to the area below the second filter screen in the box body.

[0008] Preferably, the cleaning mechanism includes a moving box fixedly mounted on the other side wall of the third shaped rod and located outside the fixed box, a circular hole connected to the interior of the moving box is opened on the top of the moving box, an inertia plug slidably connected to the inner wall of the moving box is arranged in the moving box, a spring is fixedly connected between the inertia plug and the inner top of the moving box, a fourth bend pipe and a connecting pipe connected to the interior of the moving box are arranged on the moving box, one end of the fourth bend pipe and the connecting pipe connected to the moving box are both located below the inertia plug, a second shell is arranged on the outer wall of one side of the box body, one end of the fourth bend pipe away from the moving box is connected to the second shell, and a one-way valve is arranged in the second bend pipe, the fourth bend pipe, the fifth bend pipe and the connecting pipe.

[0009] Preferably, the grinding mechanism includes a second rotating shaft which is rotatably connected between the inner walls of the box on both sides and is located between the third rotating shaft and the second filter screen. A swing frame is fixedly installed on the outer wall of the second rotating shaft and is located on the side of the power storage rod away from the second circular plate. The swing rod passes through the swing frame and is slidably connected to the inner wall of the swing frame. A grinding roller is arranged on the second rotating shaft and is close to the second filter screen.

[0010] Preferably, the stirring mechanism includes a first rotating shaft rotatably connected between the inner walls on both sides of the box body and located below the second filter screen, a plurality of stirring rods located inside the box body are fixedly installed on the outer wall of the first rotating shaft, one end of the first rotating shaft passes through one inner wall of the box body and is fixedly installed with a first gear located outside the box body, a second gear located outside the box body is fixedly installed on the outer wall of the third rotating shaft, and the second gear and the first gear are equipped with the same toothed chain belt.

[0011] Preferably, the feeding mechanism includes a first fixed block fixedly mounted on the outer wall of one end of the box body, a first driving box is fixedly mounted on the top of the first fixed block, a second square rod slidably connected to it is penetrated through the top of the first driving box, a feeding bin close to the outer wall of one side of the box body is fixedly mounted on one end of the second square rod located outside the first driving box, a baffle close to the box body is fixedly mounted on the bottom of the feeding bin, and a first square plug slidably connected to the inner wall of the first driving box is fixedly mounted on one end of the second square rod located inside the first driving box, a first bent pipe connected to its interior is provided on the first driving box, and one end of the first bent pipe connected to the first driving box is located below the first square plug. A second fixed block is fixedly installed on the outer wall of the other side of the box body, one end of the second rotating shaft penetrates the inner wall of the other side of the box body and is fixedly installed with a first circular plate located outside the box body, and a reciprocating rod is rotatably connected to a side wall of the first circular plate away from the second rotating shaft, and a second driving box is fixedly installed on a side wall of the second fixed block close to the first circular plate, and an end of the second driving box close to the first circular plate penetrates a first square rod slidably connected to it, and a reciprocating frame is fixedly installed on an end of the first square rod located outside the second driving box, the reciprocating rod passes through the reciprocating frame and is slidably connected to the inner wall of the reciprocating frame, and a third square plug is fixedly installed on an end of the first square rod located in the second driving box and is slidably connected to the inner wall of the second driving box.

[0012] Preferably, the inner cavity of the feeding bin is an inverted right-angled trapezoidal shape, the end of the first bend pipe away from the first drive box is connected to the second drive box, and the end of the first bend pipe connected to the second drive box is located on the side of the third-shaped plug away from the first square rod.

[0013] A method for beneficiating and desiliconizing ultra-low-grade bauxite, comprising the following steps:

[0014] The first step is to start the driving motor and put the bauxite into the box through the feeding bucket;

[0015] In the second step, the bauxite is initially crushed by two rotating crushing rollers. Small pieces of crushed stone fall through the first filter screen onto the second filter screen and are ground by the grinding mechanism to be further refined. Large pieces of crushed stone will be re-transported to the two rotating crushing rollers through the feeding mechanism for re-crushing, and so on.

[0016] The third step is to knock the first filter screen to vibrate the screen surface by setting an anti-blocking mechanism, and intermittently introduce a certain amount of leachate into the box to mix with the refined mineral powder. The leachate and mineral powder are stirred by setting a stirring mechanism to make the mixture more uniform, so as to carry out leaching and desiliconization and improve the grade. The dust and harmful gases generated during the desiliconization process of the box are absorbed and collected by setting a cleaning mechanism.

[0017] In the fourth step, the leached slurry is discharged and solid-liquid separation is performed, followed by flotation.

[0018] Beneficial effects of the present invention:

[0019] By setting up an anti-blocking mechanism, after starting the driving motor, the protrusion and the second square plug can be intermittently moved up and down, so that the elastic mesh surface of the first filter can be intermittently knocked, causing the mesh surface to vibrate intermittently, thereby effectively avoiding blockage of the first filter, and intermittently introducing a certain amount of leachate into the lower area of ​​the second filter.

[0020] By setting up a grinding mechanism, the small pieces of ore can be automatically crushed and ground into ore powder during the intermittent up and down movement of the convex block, so as to facilitate the subsequent leaching and desiliconization and improve work efficiency.

[0021] By providing a stirring mechanism, the stirring rod can be rotated during the intermittent up and down movement of the protrusion, so that the intermittently introduced leaching liquid and the mineral powder passing through the second filter can be stirred to make them evenly mixed, thereby improving the leaching rate.

[0022] By setting up a feeding mechanism, the feeding bin can move reciprocatingly up and down during the intermittent up and down movement of the protrusion, so that large pieces of crushed stone that have not passed through the first filter can be transported upward and re-introduced between the two crushing rollers for crushing, thereby improving the crushing effect, and there is no need for manual operation to handle the large pieces of crushed stone later.

[0023] By setting up a cleaning mechanism, the inertia plug can move reciprocatingly up and down in the motion box during the intermittent up and down movement of the protrusion, so that the dust and toxic gases generated during the desiliconization process can be intermittently sucked into the motion box and then squeezed into the second shell for collection, thereby improving the green environmental protection of the device.

[0024] The present invention can realize automatic knocking of the first filter screen, automatic refinement of small pieces of crushed stone, automatic conveying and crushing of large pieces of crushed stone, introduction of quantitative leachate, mixing of leachate and mineral powder, and suction and collection of dust and harmful gas by driving a driving motor, thereby effectively improving work efficiency, being more environmentally friendly, integrating multiple functions into one, and being more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of one side of an ultra-low-grade bauxite beneficiation and desiliconization device proposed by the present invention;

[0026] Figure 2 This is a schematic structural diagram of the other side of a desiliconization device for ultra-low-grade bauxite proposed by the present invention;

[0027] Figure 3 This is a schematic diagram of the planar structure of an ultra-low-grade bauxite beneficiation and desiliconization device proposed by the present invention;

[0028] Figure 4 A side view of a device for beneficiating and desiliconizing ultra-low-grade bauxite proposed by the present invention;

[0029] Figure 5 It is a schematic diagram of the planar structure inside the moving box and the fixed box of the present invention;

[0030] Figure 6 It is a schematic diagram of the planar structure inside the second driving box of the present invention.

[0031] In the figure: 1 box, 2 feeding bucket, 3 feeding bin, 4 first elbow, 5 first driving box, 6 first fixed block, 7 baffle, 8 first gear, 9 toothed chain, 10 second elbow, 11 first shell, 12 driving motor, 13 fixed frame, 14 second shell, 15 second gear, 16 first circular plate, 17 reciprocating frame, 18 reciprocating rod, 19 first square rod, 20 second driving box, 21 second fixed block, 22 guide plate, 23 crushing roller, 24 first filter screen, 25 discharge port, 26 second square rod , 27 first square plug, 28 second circular plate, 29 swing rod, 30 swing frame, 31 storage rod, 32 protrusion, 33 movement box, 34 third rectangular rod, 35 fixed box, 36 first rotating shaft, 37 second rotating shaft, 38 feed port, 39 grinding roller, 40 second filter screen, 41 stirring rod, 42 third rotating shaft, 43 third bend pipe, 44 round hole, 45 spring, 46 inertia plug, 47 fourth bend pipe, 48 connecting pipe, 49 tension spring, 50 second square plug, 51 fifth bend pipe, 52 third rectangular plug. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Reference Figure 1-Figure 6, a method and device for beneficiation and desiliconization of ultra-low-grade bauxite, comprising a box body 1, a feeding hopper 2 connected to the inside of the box body 1 is arranged on the top of the box body 1, two guide plates 22 symmetrically distributed and inclined are fixedly installed between the inner walls on both sides of the box body 1, two crushing rollers 23 located below the two guide plates 22 are arranged between the inner walls on both sides of the box body 1, a first filter screen 24 located below the two crushing rollers 23 is fixedly connected between the inner walls on both sides of the box body 1, the first filter screen 24 is inclined and the mesh surface has elasticity, a second filter screen 40 located below the first filter screen 24 is arranged between the inner walls on both sides of the box body 1, a feed port 38 and a discharge port 25 are opened on the side wall at one end of the box body 1, the bottom of the feed port 38 is aligned with the top of one of the guide plates 22, the bottom of the discharge port 25 is aligned with the top of the first filter screen 24, and an anti-blocking mechanism is arranged on the box body 1;

[0034] The anti-blocking mechanism includes a fixing frame 13 fixedly mounted on the outer wall of one side of the box body 1, a driving motor 12 is fixedly mounted on the outer wall of the fixing frame 13, a third rotating shaft 42 rotatably connected to the fixing frame 13 and located between the first filter screen 24 and the second filter screen 40 is penetrated on one side wall of the box body 1, one end of the third rotating shaft 42 located outside the box body 1 penetrates the fixing frame 13 and is fixedly connected to the output shaft of the driving motor 12, a second circular plate 28 is fixedly mounted on one end of the third rotating shaft 42 located inside the box body 1, a swing rod 29 is rotatably connected to the side wall of the second circular plate 28 away from the third rotating shaft 42, a fixing box 35 fixedly connected to the inner wall of one side of the box body 1 is arranged in the box body 1, a third rectangular rod 34 slidably connected to the fixing box 35 is penetrated on the top of the fixing box 35, and the third rectangular rod 34 is fixedly mounted on one end outside the fixing box 35 A protrusion 32 is provided, and a force storage rod 31 is rotatably connected on a side wall of the third shaped rod 34 close to the third rotating shaft 42. A second square plug 50 slidably connected to the inner wall of the fixed box 35 is fixedly installed on one end of the third shaped rod 34 located in the fixed box 35. A tension spring 49 is fixedly connected between the second square plug 50 and the inner top of the fixed box 35. The fixed box 35 is provided with a second elbow 10 and a fifth elbow 51 connected to the interior thereof. The ends of the second elbow 10 and the fifth elbow 51 connected to the fixed box 35 are both located below the second square plug 50. A first shell 11 is provided on an outer wall of one side of the box body 1. The end of the fifth elbow 51 away from the fixed box 35 is connected to the first shell 11, and the end of the second elbow 10 away from the fixed box 35 is connected to the area below the second filter screen 40 in the box body 1.

[0035] The anti-blocking mechanism is provided with a cleaning mechanism, which includes a moving box 33 fixedly mounted on the other side wall of the third shaped rod 34 and located outside the fixed box 35, a circular hole 44 connected to the interior of the moving box 33 is opened on the top of the moving box 33, an inertia plug 46 slidably connected to the inner wall of the moving box 33 is provided in the moving box 33, a spring 45 is fixedly connected between the inertia plug 46 and the inner top of the moving box 33, a fourth bend pipe 47 and a connecting pipe 48 connected to the interior of the moving box 33 are provided on the moving box 33, and the ends of the fourth bend pipe 47 and the connecting pipe 48 connected to the moving box 33 are both located below the inertia plug 46, a second shell 14 is provided on the outer wall of one side of the box body 1, and the end of the fourth bend pipe 47 away from the moving box 33 is connected to the second shell 14, and a one-way valve is provided in the second bend pipe 10, the fourth bend pipe 47, the fifth bend pipe 51 and the connecting pipe 48;

[0036] The box body 1 is provided with a grinding mechanism connected with the anti-blocking mechanism, and the grinding mechanism includes a second rotating shaft 37 which is rotatably connected between the inner walls of both sides of the box body 1 and between the third rotating shaft 42 and the second filter screen 40. A swing frame 30 which is located on the side of the power storage rod 31 away from the second circular plate 28 is fixedly installed on the outer wall of the second rotating shaft 37. The swing rod 29 passes through the swing frame 30 and is slidably connected with the inner wall of the swing frame 30. A grinding roller 39 which is close to the second filter screen 40 is provided on the second rotating shaft 37.

[0037] The box body 1 is provided with a stirring mechanism connected with the anti-blocking mechanism, and the stirring mechanism includes a first rotating shaft 36 rotatably connected between the inner walls of both sides of the box body 1 and located below the second filter screen 40, and a plurality of stirring rods 41 located inside the box body 1 are fixedly installed on the outer wall of the first rotating shaft 36, and one end of the first rotating shaft 36 passes through the inner wall of one side of the box body 1 and is fixedly installed with a first gear 8 located outside the box body 1, and a second gear 15 located outside the box body 1 is fixedly installed on the outer wall of the third rotating shaft 42, and the second gear 15 and the first gear 8 are equipped with the same toothed chain belt 9;

[0038] The box body 1 is provided with a feeding mechanism connected with the grinding mechanism, and the feeding mechanism includes a first fixed block 6 fixedly mounted on the outer wall at one end of the box body 1, a first driving box 5 is fixedly mounted on the top of the first fixed block 6, a second square rod 26 slidably connected thereto is penetrated through the top of the first driving box 5, a feeding bin 3 close to the outer wall of one side of the box body 1 is fixedly mounted on the end of the second square rod 26 located outside the first driving box 5, a baffle 7 close to the box body 1 is fixedly mounted on the bottom of the feeding bin 3, a first square plug 27 slidably connected to the inner wall of the first driving box 5 is fixedly mounted on the end of the second square rod 26 located in the first driving box 5, a first curved pipe 4 connected to the interior thereof is provided on the first driving box 5, and one end of the first curved pipe 4 connected to the first driving box 5 is located below the first square plug 27, a second fixed block 21 is fixedly mounted on the outer wall of the other side of the box body 1, and one end of the second rotating shaft 37 penetrates the inner wall of the other side of the box body 1 and is fixedly mounted A first circular plate 16 is provided outside the box body 1, and a reciprocating rod 18 is rotatably connected to a side wall of the first circular plate 16 away from the second rotating shaft 37. A second driving box 20 is fixedly installed on a side wall of the second fixed block 21 close to the first circular plate 16. An end of the second driving box 20 close to the first circular plate 16 is penetrated by a first square rod 19 slidably connected thereto. A reciprocating frame 17 is fixedly installed on an end of the first square rod 19 located outside the second driving box 20. The reciprocating rod 18 passes through the reciprocating frame 17 and is slidably connected to the inner wall of the reciprocating frame 17. A third rectangular plug 52 is fixedly installed on one end of the first square rod 19 located in the second driving box 20 and is slidably connected to the inner wall of the second driving box 20. The inner cavity of the feeding bin 3 is an inverted right-angled trapezoidal shape. The end of the first curved pipe 4 away from the first driving box 5 is connected to the second driving box 20, and the end of the first curved pipe 4 connected to the second driving box 20 is located on a side of the third rectangular plug 52 away from the first square rod 19.

[0039] A method for beneficiating and desiliconizing ultra-low-grade bauxite, comprising the following steps:

[0040] The first step is to start the driving motor 12 and put the bauxite into the box 1 through the feeding bucket 2;

[0041] In the second step, the bauxite is preliminarily crushed by two rotating crushing rollers 23. Small pieces of crushed stone fall onto the second filter screen 40 through the first filter screen 24 and are ground by the grinding mechanism to be further refined. Large pieces of crushed stone are re-transported to the two rotating crushing rollers 23 through the feeding mechanism to be re-crushed, and this process repeats;

[0042] The third step is to knock the first filter screen 24 to vibrate the screen surface by setting an anti-blocking mechanism, and intermittently introduce a certain amount of leachate into the box 1 to mix with the refined mineral powder, and set a stirring mechanism to stir the leachate and the mineral powder to make the mixture more uniform, so as to carry out leaching and desiliconization and improve the grade, and set a cleaning mechanism to absorb and collect the dust and harmful gases generated in the desiliconization process of the box 1.

[0043] In the fourth step, the leached slurry is discharged and solid-liquid separation is performed, followed by flotation.

[0044] When the present invention is used, the first shell 11 contains leaching liquid, the driving motor 12 is started, and the bauxite is put into the box body 1 through the input bucket 2. The bauxite put into the box body 1 falls between the two crushing rollers 23 through the guiding action of the inclined guide plate 22. The bauxite can be preliminarily crushed by the two rotating crushing rollers 23. The crushed bauxite falls onto the first filter screen 24 for screening. Small pieces of crushed stone will pass through the first filter screen 24 and fall onto the second filter screen 40, while large pieces of crushed stone will slide to the discharge port 25. When the feeding bin 3 is opposite to the discharge port 25, the large pieces of crushed stone will enter the inside of the feeding bin 3.

[0045] The output shaft of the driving motor 12 drives the third rotating shaft 42, the second gear 15, the second circular plate 28 and the swinging rod 29 (attached Figure 5 During the clockwise rotation of the swing rod 29, since the swing rod 29 passes through the swing frame 30 and is slidably connected to the inner wall of the swing frame 30, the swing frame 30 can be reciprocated right and left, thereby causing the second rotating shaft 37 to reciprocate counterclockwise by a certain angle, and finally causing the grinding roller 39 to roll left and right, thereby grinding the small pieces of crushed stone to further refine them into ore powder and drop them to the inner bottom of the box body 1 through the second filter screen 40;

[0046] The second rotating shaft 37 reciprocates counterclockwise to rotate at a certain angle, driving the first circular plate 16 to reciprocate counterclockwise to rotate at a certain angle. By setting the reciprocating rod 18 and the reciprocating frame 17, the first square rod 19 and the third square plug 52 can reciprocate right and left (see FIG. Figure 6When the third shaped plug 52 moves to the right, the incompressible oil in the second driving box 20 can be squeezed into the first driving box 5 through the first elbow 4, so that the second square rod 26, the first square plug 27, the feeding bin 3 and the baffle 7 can move upward. The baffle 7 moving upward can prevent large pieces of crushed stone from falling out of the discharge port 25. The feeding bin 3 moving upward will eventually align with the feed port 38, so that the large pieces of crushed stone in the feeding bin 3 will pass through the feed port 38 and the guide plate 22 and fall between the two rotating crushing rollers 23 again. When the third shaped plug 52 moves to the left, the second square rod 26, the first square plug 27, the feeding bin 3 and the baffle 7 moving upward will move downward, and the feeding bin 3 will align with the discharge port 25 again, and the large pieces of crushed stone can be crushed multiple times in this reciprocating manner.

[0047] During the clockwise rotation of the swing rod 29, the swing rod 29 will first contact with the force storage rod 31 and then separate from the force storage rod 31. During the contact between the swing rod 29 and the force storage rod 31, the swing rod 29 will cause the force storage rod 31, the third shaped rod 34, the movement box 33, the protrusion 32 and the second square plug 50 to slide downward, the tension spring 49 is stretched, and the downward sliding of the second square plug 50 will squeeze the quantitative leachate in the fixed box 35 through the second bent pipe 10 to the area below the second filter screen 40 in the box body 1, so that the leachate is mixed with the mineral powder. When the swing rod 29 and the force storage rod 31 are separated from each other, the tension generated by the stretched tension spring 49 can cause the force storage rod 31, the third shaped rod 34, the movement box 33, the protrusion 32 and the second square plug 50 to move upward quickly, and the protrusion 32 that moves upward quickly can squeeze the first filter screen The elastic mesh surface of the net 24 is knocked to vibrate, thereby preventing the first filter screen 24 from being blocked. The second square plug 50 slides upward to allow the leachate in the first shell 11 to be sucked into the fixed box 35 through the fifth bend pipe 51. During the process of the moving box 33 moving upward rapidly until it stops moving upward, due to the large mass and inertia of the inertia plug 46, the inertia of the inertia plug 46 will cause the inertia plug 46 to continue to move upward for a distance in the moving box 33, thereby compressing the spring 45, and the dust and toxic gas in the box body 1 are sucked into the moving box 33 through the connecting pipe 48. After a period of time, the pressure generated by the compression of the spring 45 can restore the inertia plug 46 to its initial position, thereby allowing the dust and toxic gas sucked into the moving box 33 to be squeezed into the second shell 14 through the fourth bend pipe 47, and so on.

[0048] When the second gear 15 rotates, the first rotating shaft 36 and the stirring rod 41 can be rotated by setting the toothed chain belt 9 and the first gear 8, and the refined mineral powder and the leaching solution can be stirred by the rotating stirring rod 41 to make them evenly mixed.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for beneficiating and desiliconizing ultra-low-grade bauxite, comprising a housing (1), It is characterized in that The top of the box body (1) is provided with a feeding hopper (2) connected to the interior thereof; two guide plates (22) symmetrically distributed and inclined are fixedly installed between the inner walls on both sides of the box body (1); two crushing rollers (23) located below the two guide plates (22) are arranged between the inner walls on both sides of the box body (1); a first filter screen (24) located below the two crushing rollers (23) is fixedly connected between the inner walls on both sides of the box body (1); the first filter screen (24) is inclined and has an elastic mesh surface; a second filter screen (40) located below the first filter screen (24) is arranged between the inner walls on both sides of the box body (1); a feed inlet (38) and a discharge port (25) are provided on one end side wall of the box body (1); the feed inlet The bottom of the material guide plate (38) is aligned with the top of one of the material guide plates (22), the bottom of the material outlet (25) is aligned with the top of the first filter screen (24), the box body (1) is provided with an anti-blocking mechanism, the anti-blocking mechanism comprises a fixing frame (13) fixedly mounted on an outer wall of one side of the box body (1), a driving motor (12) is fixedly mounted on the outer wall of the fixing frame (13), a third rotating shaft (42) is penetrated through one side wall of the box body (1) and is rotatably connected thereto and is located between the first filter screen (24) and the second filter screen (40), one end of the third rotating shaft (42) located outside the box body (1) penetrates the fixing frame (13) and is fixedly connected to the output shaft of the driving motor (12), and the third rotating shaft (42) is located inside the box body (1). A second circular plate (28) is fixedly mounted on one end of the housing (1), a swing rod (29) is rotatably connected to a side wall of the second circular plate (28) away from the third rotating shaft (42), a fixing box (35) fixedly connected to an inner wall of one side of the housing (1) is arranged in the housing (1), a third shaped rod (34) slidably connected to the fixing box (35) is penetrated through the top of the fixing box (35), a protrusion (32) is fixedly mounted on one end of the third shaped rod (34) located outside the fixing box (35), a power storage rod (31) is rotatably connected to a side wall of the third shaped rod (34) close to the third rotating shaft (42), and a second square plug (5) slidably connected to the inner wall of the fixing box (35) is fixedly mounted on one end of the third shaped rod (34) located inside the fixing box (35) 0), a tension spring (49) is fixedly connected between the second square plug (50) and the inner top of the fixed box (35), the fixed box (35) is provided with a second curved pipe (10) and a fifth curved pipe (51) which are connected to the interior thereof, the second curved pipe (10) and the fifth curved pipe (51) are both located below the second square plug (50), a first shell (11) is provided on an outer wall of one side of the box body (1), the end of the fifth curved pipe (51) away from the fixed box (35) is connected to the first shell (11), the end of the second curved pipe (10) away from the fixed box (35) is connected to the area below the second filter screen (40) in the box body (1), and the anti-blocking mechanism is provided with a cleaning mechanism,The cleaning mechanism comprises a moving box (33) fixedly mounted on the other side wall of the third shaped rod (34) and located outside the fixed box (35); a circular hole (44) communicating with the interior of the moving box (33) is provided on the top of the moving box (33); an inertia plug (46) slidably connected to the inner wall of the moving box (33) is provided inside the moving box (33); a spring (45) is fixedly connected between the inertia plug (46) and the inner top of the moving box (33); a fourth curved pipe (47) and a connecting pipe (48) communicating with the interior of the moving box (33) are provided on the moving box (33); one end of the fourth curved pipe (47) and the connecting pipe (48) communicating with the moving box (33) are both located below the inertia plug (46); a second shell (14) is provided on the outer wall of one side of the box body (1) ), one end of the fourth curved pipe (47) away from the motion box (33) is connected to the second shell (14); the second curved pipe (10), the fourth curved pipe (47), the fifth curved pipe (51) and the connecting pipe (48) are all provided with a one-way valve; the box body (1) is provided with a grinding mechanism connected to the anti-blocking mechanism; the grinding mechanism comprises a second rotating shaft (37) rotatably connected between the inner walls of both sides of the box body (1) and located between the third rotating shaft (42) and the second filter screen (40); a swing frame (30) located on the side of the power storage rod (31) away from the second circular plate (28) is fixedly mounted on the outer wall of the second rotating shaft (37); the swing rod (29) passes through the swing frame (30) and is slidably connected to the inner wall of the swing frame (30); A grinding roller (39) is arranged on the second rotating shaft (37) and is adjacent to the second filter screen (40); a stirring mechanism connected to the anti-blocking mechanism is arranged on the box body (1); a feeding mechanism connected to the grinding mechanism is arranged on the box body (1); the feeding mechanism comprises a first fixed block (6) fixedly mounted on the outer wall of one end of the box body (1); a first driving box (5) is fixedly mounted on the top of the first fixed block (6); a second square rod (26) slidably connected to the first driving box (5) is penetrated through the top of the first driving box (5); a feeding bin (3) adjacent to the outer wall of one side of the box body (1) is fixedly mounted on the end of the second square rod (26) located outside the first driving box (5); a feeding bin (3) adjacent to the outer wall of one side of the box body (1) is fixedly mounted on the bottom of the feeding bin (3); The first driving box (5) is provided with a first curved tube (4) connected to the interior thereof, and one end of the first curved tube (4) connected to the first driving box (5) is located below the first square plug (27). A second fixed block (21) is fixedly installed on the outer wall of the other side of the box body (1). One end of the second rotating shaft (37) passes through the inner wall of the other side of the box body (1) and is fixedly installed with a first circular plate (16) located outside the box body (1). A reciprocating rod (18) is rotatably connected to the wall of the first circular plate (16) away from the second rotating shaft (37).A second driving box (20) is fixedly mounted on a side wall of the second fixed block (21) close to the first circular plate (16); a first square rod (19) is penetrated through one end of the second driving box (20) close to the first circular plate (16) and is slidably connected thereto; a reciprocating frame (17) is fixedly mounted on one end of the first square rod (19) located outside the second driving box (20); the reciprocating rod (18) passes through the reciprocating frame (17) and is slidably connected to the inner wall of the reciprocating frame (17); a third square plug (52) is fixedly mounted on one end of the first square rod (19) located inside the second driving box (20) and is slidably connected to the inner wall of the second driving box (20).

2. The ultra-low-grade bauxite beneficiation and desiliconization device according to claim 1, It is characterized in that The stirring mechanism comprises a first rotating shaft (36) rotatably connected between the inner walls of both sides of the box body (1) and located below the second filter screen (40); a plurality of stirring rods (41) located inside the box body (1) are fixedly mounted on the outer wall of the first rotating shaft (36); one end of the first rotating shaft (36) passes through the inner wall of one side of the box body (1) and is fixedly mounted with a first gear (8) located outside the box body (1); a second gear (15) located outside the box body (1) is fixedly mounted on the outer wall of the third rotating shaft (42); the second gear (15) and the first gear (8) are fitted with the same toothed chain belt (9).

3. The ultra-low-grade bauxite beneficiation and desiliconization device according to claim 2, It is characterized in that The inner cavity of the feeding bin (3) is in the shape of an inverted right-angled trapezoid; one end of the first curved pipe (4) away from the first drive box (5) is connected to the second drive box (20); and one end of the first curved pipe (4) connected to the second drive box (20) is located on a side of the third rectangular plug (52) away from the first square rod (19).

4. A method for beneficiation and desiliconization of ultra-low-grade bauxite, It is characterized in that The ultra-low-grade bauxite beneficiation and desiliconization device according to claim 3 is used. The following steps are involved: The first step is to start the driving motor (12) and put the bauxite into the box (1) through the feeding bucket (2); In the second step, the bauxite is initially crushed by two rotating crushing rollers (23), small pieces of crushed stone fall through the first filter screen (24) onto the second filter screen (40) and are ground by the grinding mechanism to be further refined, and large pieces of crushed stone are re-transported to the two rotating crushing rollers (23) through the feeding mechanism to be re-crushed, and the process repeats; The third step is to knock the first filter screen (24) by setting an anti-blocking mechanism to vibrate the screen surface, and intermittently introduce a certain amount of leaching liquid into the box (1) to mix with the refined mineral powder, and to stir the leaching liquid and the mineral powder by setting a stirring mechanism to make the mixture more uniform, so as to perform leaching and desiliconization and improve the grade, and to absorb and collect the dust and harmful gases generated in the desiliconization process of the box (1) by setting a cleaning mechanism; In the fourth step, the leached slurry is discharged and solid-liquid separation is performed, followed by flotation.

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